How about a simple Push Pull amp based on the SV83? Or a SET amp using the Svetlana 6AS7? I have often wondered what this tube would sound like in a SET amp, no one is using this tube like this that I am aware of.

Please Please build a kit for a headphone amp. or a version of the zsp1 that has a headphone out also. I would love to get some of that zen decware sound in my bedroom, (where there is no hope of decent sound with conventional speakers.)

Please build a low cost power conditioner!It will improve the sound of all components and the whole system. I mean, what good is a world class headphone amp without clean power? ... you'll just hear more of the grundge!

Steve's principles on product development appears to be quite simple: He'll only market it if he thinks he has a chance of it being the best at that price point. It's a very reasonable and admirable one I guess and it's demonstrated by the absence of a Zen turntable. Another example is in the ZSLA1 instruction manual regarding line conditioners:

"To date the only line conditioners we know of that make a profound difference are made by PS Audio." My guess is that if he were to develop a line conditioner the PS Audio would be his performance aim point. My hope is that he'll be able to achieve that at half the price...

A "hybrid" Zen amp with SV83 tube based channel for the mids/highs and a Tripath Technologies "chip amp" for the low end. It would have a built in active crossover of course with the normal adjustments, phase, level, crossover, etc.The objective is to get some slamming bass with good integration but not touching the sound of the Zen mids/highs

This comment is interesting even though we don't know the context of his opinion. Speakers, previously owned amps, etc....

"A good tube pre, feeding a Tripath amp gets everything right, musically correct,zero even order distortion, and the 12AU7 getting all the sonic goodies just right, while still retaining the magic,with no tube hassle. All of the good, none of the bad... Best combo I have yet owned."

We've heard the "tubes are dead" cry before. However, I would think its worth investigating. You never know where those "Zen" discoveries will lead you. I hear you can get free chip samples from Tripath.